Check Deck Drive Belt - Briggs & Stratton 5900731 Instruction Manual

7. For your safety, DO NOT handle mower blades
with bare hands. Position the outside mower blades
so that they face front-to-back. See Figure 14.
8. Measure from the front tip of the blade from the
cutting edge to the ground.
Measure from the rear tip of the blade from the
cutting edge to the ground. Repeat this process for
the other side of the machine.
The front measurements should be 4" (10,2 cm), the
back measurements should be 4-1/4" (10,8 cm). If
the measurements are greater than 1/8" (3,17 mm) of
what they should be adjust the deck height until they
are correct.
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Figure 14 - Measuring the Blade Height

Check Deck Drive Belt

1. Lower the mower deck to its lowest cutting position.
2. Remove the mower deck guards.
3. Make sure the V-side of the belt runs in the pulley
grooves. See Figure 15.
Figure 15 - Deck Drive Belt Routing
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Zero-Turn Riding Mower - 48" Mower Deck
WARNING
Use extreme caution when rotating the idler arm
with the breaker bar, due to the increased tension
in the spring as the idler arm is being rotated.
Injury may result if the breaker bar is prematurely
released while the spring is under tension.
4. If the belt is not properly seated, use a 1/2" breaker
bar, and place the square end in the square hole
located in the end of the idler arm (A, Figure 16).
Carefully rotate the breaker bar CLOCKWISE, which
will relieve the tension on the belt exerted from the
idler arm.
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Figure 16 - Re-seating the Deck Drive Belt
5. Re-seat belt and carefully release the tension on the
breaker bar.
6. Reinstall the mower deck guards.
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